Server Administration: automatically restarting services

[Dennis Ruzeski]

This is a pretty simple shell script from UGU.com. The basic idea is
that it greps for the process. If it doesn't see it, it restarts it..
This one is ok, I've got a ksh version that's a little neater and a
friend of mine wrote a perl script that's great, but I can't get a hold
of him to get a copy.


>From UGU.com
Here is a script that will keep daemons running 
if the decide to die for some unforseen reason. 

This tip generously supported by: ken at theglobeandmail.com 

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#!/bin/csh 
# 
# NAME 
# keepitup.csh - Keep demons up and running 
# 
# SYNOPSIS 
# keepitup.csh 
# 
# DESCRIPTION 
# If any of the following processes are down, then start them up 
# again. This script can be run every few minutes from a crontab. 
# 
# AUTHOR 
# Ken Stevens 

foreach daemon ( \ 
/opt/GIS/apps/EventDispatcher/scripts/EventDispatcher.pl \ 
/opt/GIS/apps/CatchFTP/scripts/ProcessFTP.pl \ 
/opt/GIS/apps/NewsHound/scripts/NewsHound.pl \ 
) 

ps -e | fgrep `echo $daemon:t | cut -c1-8` > /dev/null 

if ( $status > 0 ) then 
echo Restarting $daemon 
date 
$daemon & 
endif 

end 



-----Original Message-----
From: Matt Cristantello [mailto:matt at crazy42.org] 
Sent: Thursday, April 08, 2004 12:39 AM
To: nflug at nflug.org
Subject: Server Administration: automatically restarting services

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Hash: SHA1

Hey,

I was just wondering if any of you have come across any projects to
automatically restart crashed or broken services (such as sshd, apache,
etc.) in linux. I have rcN.d and init.d scripts set up, but I'd like
something to check, say every five minutes, and see if a process is
still running/is in a good state, then restart it if it's not. I can do
something similar using ps -A, grep, and then running the init.d script
if necessary, but I'd like somethign a little more automatic. If nothing
like this has been done, I'll look into writing something and releasing
it under the GPL or something like that.

Thanks,
~Matt

- --
************************************************************************
****
"When trouble arises and things look bad, there is always one
individual who perceives a solution and is willing to take command.
Very often, that individual is crazy."
- -Dave Barry
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~                Matthew D. Cristantello
~                matt at crazy42.org
~                716-472-3833 (cell)
~                AIM: Matt977
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